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Sample Python Flask Application using Azure App Configuration

This is the sample Flask application that uses the Azure App Configuration Service Deploy a Python (Django or Flask) web app to Azure App Service. For instructions on how to create the Azure resources and deploy the application to Azure, refer to the Quickstart article.

A sample Django application is also available.

If you need an Azure account, you can create one for free.

Prerequisites

You must have an Azure subscription, and a Configuration Store to use this package.

To create a Configuration Store, you can either use Azure Portal or if you are using Azure CLI you can simply run the following snippet in your console:

az appconfig create --name <config-store-name> --resource-group <resource-group-name> --location eastus

Create Keys

az appconfig kv set --name <config-store-name> --key testapp_settings_message --value "Hello from Azure App Configuration"
az appconfig kv set --name <config-store-name> --key testapp_settings_font_size --value "30px"
az appconfig kv set --name <config-store-name> --key testapp_settings_color --value "azure"
az appconfig kv set --name <config-store-name> --key sentinel --value "1"
az appconfig feature set --name <config-store-name> --feature Beta

Create Key Vault Reference

Requires Key Vault with Secret already created.

az appconfig kv set-keyvault --name <config-store-name> --key secret_key --secret-identifier <key-vault-reference>

Setup

Install the Azure App Configuration Provider client library for Python and other dependencies with pip:

pip install -r requirements.txt

Set your App Configuration store endpoint as an environment variable.

Command Prompt

setx AZURE_APPCONFIG_ENDPOINT "your-store-endpoint"

PowerShell

$Env:AZURE_APPCONFIG_ENDPOINT="your-store-endpoint"

Linux/ MacOS

export AZURE_APPCONFIG_ENDPOINT="your-store-enpoint"

Start the flask application using the flask command:

flask run

Refresh Configuration

To refresh your configuration, you first update the value in Azure App Configuration, then update the Sentinel value to trigger a refresh.

az appconfig kv set --name <config-store-name> --key testapp_settings_color --value "violet"
az appconfig kv set --name <config-store-name> --key sentinel --value "2"
az appconfig feature enable --name <config-store-name> --feature Beta

Refresh the page in your browser to see the updated value, along with a now visible Beta page.

NOTE: By default refresh can only be triggered every 30 seconds. You might have to wait up to 30 seconds and refresh the page again in order to see a change.